KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman of KnowBe4, Inc., which hosts the world’s most popular integrated security awareness training and simulated phishing platform, with over 54,000 organization customers and more than 50 million users. A serial entrepreneur and data security expert with 30 years in the IT industry, Stu was the co-founder of Inc. 500 company Sunbelt Software, a multiple award-winning anti-malware software company that was acquired in 2010.


Recent Posts

1 in 8 Email Threats Now Make It Past Email Security Solutions

Phishing attacks that can evade detection by email scanners are improving their chances of reaching the inbox, thanks to an increase in the use of one specific attachment type.

"We are hurtling toward a glitchy, spammy, scammy, AI-powered internet."

This MIT Technology Review headline caught my eye, and I think you understand why. They described a new type of exploit called prompt injection.

FBI: 870 Critical Infrastructure Organizations Were the Victim of Ransomware in 2022

The FBI’s newly-released report shows just how ransomware continues to plague critical infrastructure sectors, despite the U.S. government’s recent efforts to stop these attacks.

That’s Not Actually Mr. Musk, That's a Scam

A school principal in Volusia County, Florida has resigned after sending $100,000 to a scammer posing as Elon Musk, WESH 2 News reports. Dr. Jan McGee from the Burns Science and ...

Scareware From a Phony Ransomware Group

BleepingComputer reports that a cybercriminal gang is sending phony ransomware threats to prior victims of ransomware attacks. The gang, which calls itself “Midnight,” claims to have ...

CyberheistNews Vol 13 #14 [Eyes on the Prize] How Crafty Cons Attempted a 36 Million Vendor Email Heist

CyberheistNews Vol 13 #14 | April 4th, 2023 [Eyes on the Prize] How Crafty Cons Attempted a 36 Million Vendor Email Heist The details in this thwarted VEC attack demonstrate how the use ...

Social Engineering Attacks Utilizing Generative AI Increase by 135%

New insights from cybersecurity artificial intelligence (AI) company Darktrace shows a 135% increase in novel social engineering attacks from Generative AI.

Ukrainian Police Take Down Cybercrime Ring

The Cyber Police of Ukraine have arrested twelve alleged members of an organized cybercrime group that’s stolen approximately $4.3 million from users across Europe, the Hacker News ...

Mid-Sized Businesses Lack the Staffing, Expertise, and Resources to Defend Against Cyberattacks

Mid-sized businesses – those with 250 to 2000 employees – don’t appear to have what they need to fend off attacks in a number of critical ways.

Majority of Government Employees are Partially Working Virtually Despite Increased User-Related Cyber Risks

New global data shows that those government employees that work solely in the office are the new minority, IT lacks visibility, and user actions put the government at risk.